Roof Cleaning and Moss Removal in Seattle, WA

Our Seattle roofing contractors are the very best in roof cleaning, gutter cleaning, and moss removal treatment. Metal roof cleaning, composition roof cleaning, flat roof cleaning, and more. Contact us today to schedule your appointment. If you're looking for more than a one-time cleaning, all of our roof and gutter cleaning, polishing, maintenance, and inspection services are included in our affordable Home Care Program!

Contractor removing roof moss with cleaning brush in Seattle

Our Roof Cleaning Options

One-Time Cleaning

Contractor scraping mold off a roof with a roof cleaner
Starting at: $549
Features:
  • Improve curb appeal and home aesthetics.
  • Minimize damage caused by moss.
  • Conserve gutter system function.
  • Remove algae before it breaks down roofing materials.
  • Jump start your outdoor to-do list.
  • Free virtual estimates.

Annual Maintenance

Seattle, Washington roof cleaning crew
Starting at: $329
Features:
  • Keep your roof looking great.
  • Prevent costly repair.
  • Protect your investment.
  • Elongate the life of your roof.
  • Identify concerns before they become a problem.
  • Roof cleaned 1 to 2 times each year.

Features and Benefits of Roof Cleaning

  • Moss & algae removal: In Seattle, moss and algae can start growing on just about any surface, especially your roof. If left unchecked, moss and other organic material can cause real damage to your shingles. Prevent moss roots from causing shingles to lift while avoiding shingle discomposure caused by algae and bacteria. Elongate the life of your roof with a roof cleaning and moss removal service today.
  • Gutter cleaning: Clearing downspouts and gutters will prevent the backflow of water onto your roof, which can overflow onto your home’s siding and foundation. Gutter cleaning will effectively safeguard against roof leaks, soil erosion, and siding damage. Protect your investment with a gutter cleaning from Valentine Roofing.
  • Increase curb appeal: Real estate professionals agree that curb appeal is a major factor when selling a home. Having a show-worthy roof gives potential home buyers confidence in the durability of your home. Elevate your home's curb appeal with a roof cleaning by Valentine Roofing.
  • Before-and-after photos: Most homeowners can't see the top of their roof, so how do they know that the moss was removed, or that the gutters were cleared? Valentine Roofing solves this problem by providing before-and-after photos with every roof cleaning service. We are always proud to show homeowners our work!
Twig and tree branch removal on a Seattle home's roof

Don’t Just Take Our Word For It

4.8out of 1100+ real reviews!

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Celia N

Valentine originally installed our roof and we have used their roof cleaning service since. We hadn’t had the roof cleaned during the pandemic so it was in need of it, as were the outside of our gutters which have Gutter Helmet over them. The tech, Cameron, arrived and spent 2.5 hours cleaning the...

Valentine originally installed our roof and we have used their roof cleaning service since. We hadn’t had the roof cleaned during the pandemic so it was in need of it, as were the outside of our gutters which have Gutter Helmet over them. The tech, Cameron, arrived and spent 2.5 hours cleaning the roof and applying the moss treatment. He cleaned the outside of the gutters which are now back to their sparkling white. He left the ground space totally clean. I recommend using Valentine for all of your home-related needs. Our house will turn 100 next year. When we replaced the cedar gutters about 5 years ago, the person they sent us helped us in finding a gutter that was appropriate to the style of our house. Highly recommend Valentine!

William Lackey

Valentine Roofing is AWESOME they cleaned gutters and protected roof. They sent two technicians that were very pleasant and so professional. I was very very impressed with the job they did and will never even consider using anyone else. They cleaned everything up and you would never know that they w...

Valentine Roofing is AWESOME they cleaned gutters and protected roof. They sent two technicians that were very pleasant and so professional. I was very very impressed with the job they did and will never even consider using anyone else. They cleaned everything up and you would never know that they were here by looking . They even cleaned the skylights Thank You Valentine Roofing

Craig Webber

We used Valentine Roofing for many years to clean the roof, inspect the roof, treat for moss and clean the gutters. The service was completed 2 times per year and they were professional in all aspects of the contract. The project manager and the technician doing the work communicated the dates of se...

We used Valentine Roofing for many years to clean the roof, inspect the roof, treat for moss and clean the gutters. The service was completed 2 times per year and they were professional in all aspects of the contract. The project manager and the technician doing the work communicated the dates of service, and followed up with photos, reports, and of course an invoice. I am very satisfied with the Valentine Roofing team and can easily recommend them.

Roofing contractors serving Western Washington and beyond
Contact Valentine Roofing to request a free bid on your roof cleaning project today!

Frequently Asked Roof Washing Questions

Should I have my roof pressure washed?

Pressure washing is never recommended for cleaning your roof. Shingle manufacturers specifically indicate that pressure should never be used to clean your shingles. Pressure washing does not kill algae and, if left untreated, the moss and algae will return quickly to your roof. You also run the risk of causing irreparable damage to the shingles themselves. Pressure washing will loosen granules which can cause shingles to prematurely fail. The water pressure can also lift shingles, breaking the seal between shingles and allowing a path for future leaks.

Valentine Roofing always recommends moss removal by gentle agitation using a roof brush to prevent granule loss and shingle lift, followed by a moss and algae treatment to ensure they stay gone.

How much does a roof cleaning cost?

The cost of a roof cleaning will vary depending on the type of roofing material as well as the size and pitch of the roof. At Valentine Roofing a one-time roof cleaning starts at $549, while our annual roof cleaning and maintenance starts at $329, a great value.

Can I perform a roof cleaning myself?

A roofing contractor familiar with the roofing material and manufacturer recommendations, like Valentine Roofing, is always the best choice when it comes to roof cleaning and moss removal. You can rest assured that a roofing contractor will have the proper equipment, training, and tools to safely and effectively clean your roof.

Does rain wash away the moss and algae treatment on my roof?

While it may seem that the rain is washing away any treatment left on your roof to kill moss and algae, it is actually helping the process. The rain will create a mixture with the treatment, covering the shingles as it moves down the roof. This is an effective way to guarantee that all your shingles get an even distribution of treatment for weeks to come.